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Proof step 3 from proof addarrays-length-01 (previous step)

1 + n→i(# refs) = countrefs(i ' + ints0), newref(r, st), is_newref_list(refs, st), posints(ints0), 0 ≤ i ⊦ r = jvmref, (addarrays(r ' + refs, ty, i ' + ints0, 0, st)[r -- _length]) = intval(i), r ∈ refs, is_newref_list(r ' + refs, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , is_newref_list(r ' + refs, st) ↔ ¬ ¬ (¬ r ∈ refs ∧ newref(r, st) ∧ is_newref_list(refs, st)) ,[st, refs, r] → [st, refs, r] ,F ,storefuns , ,newrefs-rec ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, refs, r)]]